1. On a solid foundation or workbench, installed correctly, the environment has no vibration and no corrosive medium;
2. The fluctuation range of the power supply voltage should not exceed ±10% of the rated voltage, the power supply of the testing machine should be reliably grounded, and the frequency fluctuation should not exceed 2% of the rated frequency;
3. The room temperature is 10℃-35℃, and the relative humidity is not more than 80%.
